Wristwatch



FIG. 1 is a top plan view of a wristwatch showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is an inverted right side elevational view thereof;

FIG. 4 is an inverted left side elevational view thereof;

FIG. 5 is a front end elevational view thereof, the rear end being a mirror image thereof. 

The ornamental design for a wristwatch, as shown and described. 